The vastus medialis muscle is one of the four heads of the quadriceps muscle.

vastus lateralis

Vastus medialis is the medial head of the quadriceps muscle.

The lower part of the vastus medialis muscle has oblique fibres, and is called the vastus medialis obliquus or VMO muscle. It has particular importance in stabilising the patella.


The muscles of the knee

Learn the names of the main knee muscles.